Normally this is where I'd tell you to click through.
But this appears to be all there is to it. This is the work of alleged "pranksters."
This site at the intersection of U.S. 160 and U.S. 550 in Durango used to be home to the Arc of History, a piece of public art that was removed after vandals damaged it and repairs were deemed too costly.
The Durango Herald gave this photo the title "Mysterious Newcomer."
Welcome, friend.